Rational Delegation Computation And Big Data Trading Method

Rational delegation computation is the product of the development of game theory and delegation computation.It extends the research field of delegation computation,guarantees the correctness of returned result through utility function,and is especially suitable for the booming of oriented-application big data industry.The big data trading is the key to break the data island and make data monetization,but the big data market lacks fair and reliable data trading method and reasonable data pricing technology.In this regard,it is of great importance to investigate the rational delegation computation and data trading method.The paper studies the rational delegation computing and big data trading methods based on the game theory,the delegation computing and the Bitcoin technology,mainly including the rational delegation computing scheme,the fair trading scheme for big data,the delegation auction scheme for big data pricing.The main contents are as follows:(1)The fair rational delegation computing scheme is studied in game-theoretical setting.Firstly,based on the sub-game perfect Nash equilibrium,we analyze the action strategies of the participants in the delegation computing and obtain the unique stable equilibrium solutions.Second,with the help of the Bitcoin and Micali-Rabin's random vector representation technique,a new rational delegation computation protocol is devised.The verification is simple and efficient and it will leak nothing about the results.Finally,the security and performance analysis results show that the proposed protocol not only solves the complex verification problem of traditional one,but also ensures the interests of the honest.(2)Based on game theory,Bitcoin technology and sampling technology,we propose a fair delegation trading scheme for big data.Firstly,we use game theory to analyze the behavior of seller and buyer in big data trading scheme,and find out that there is a prisoner's dilemma between them.Secondly,the seller and the buyer submit a deposit security scheme through the Bitcoin to protect the interests of the honest person.During the verification phase,the buyer can verify the integrity of big data by simple random sampling.Finally,we analyze the security and fairness of the big data trading scheme.(3)With regard to the challenge of reasonable pricing in big data,we present a secure delegation auction scheme with the function of big data pricing.First,based on Micali-Rabin's random vector representation methods,we design big data auction and validation algorithm.Second,the big data's integrity and non-repudiation of the reserve price are realized by Merkle tree and the Bit commitment protocol respectively,especially in the pricing stage the use of a special multi-party secure computing protocol to hide the reserve price of big data,whereby ensuring the fairness of the big data trading.Finally,as the scheme's security and performance analysis indicate that it is particularly suitable for delegation auction in the context of the big data trading.